Uber's US support number is 800-593-7069. You can also tweet at their twitter account, which usually gets you a quick response. @Uber_Support ‏

Its sad that so many companies require you to kick up a stink on social media before they will acknowledge your complaint.

Movistar and Vodafone in Spain have both been like that with me.

Did you complain to your consumer protection bureau?

Chargeback.